Author: hiren
Date: Thu Apr 3 01:46:03 2014
New Revision: 264063
URL: http://svnweb.freebsd.org/changeset/base/264063
Log:
Improve readability of comments for DELAY_ACK() macro.
Modified:
head/sys/netinet/tcp_input.c
Modified: head/sys/netinet/tcp_input.c
==============================================================================
--- head/sys/netinet/tcp_input.c Thu Apr 3 01:32:43 2014
(r264062)
+++ head/sys/netinet/tcp_input.c Thu Apr 3 01:46:03 2014
(r264063)
@@ -503,13 +503,14 @@ do { \
/*
* Indicate whether this ack should be delayed. We can delay the ack if
- * - there is no delayed ack timer in progress and
- * - our last ack wasn't a 0-sized window. We never want to delay
- * the ack that opens up a 0-sized window and
- * - delayed acks are enabled or
- * - this is a half-synchronized T/TCP connection.
- * - the segment size is not larger than the MSS and LRO wasn't used
- * for this segment.
+ * following conditions are met:
+ * - There is no delayed ack timer in progress.
+ * - Our last ack wasn't a 0-sized window. We never want to delay
+ * the ack that opens up a 0-sized window.
+ * - LRO wasn't used for this segment. We make sure by checking that the
+ * segment size is not larger than the MSS.
+ * - Delayed acks are enabled or this is a half-synchronized T/TCP
+ * connection.
*/
#define DELAY_ACK(tp, tlen) \
((!tcp_timer_active(tp, TT_DELACK) && \
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